User manual INDICATOR SWE-94-S

Transcription

1 Assisting the automation industry since 1986 User manual INDICATOR SWE-94-S Firmware: v.1.00 or higher Input type: RS-485 Master / Slave function, low-cost, no keyboard Read the user's manual carefully before starting to use the unit or software. Producer reserves the right to implement changes without prior notice SWE-94-S_INSSXEN_v

2 CONTENTS 1. BASIC REQUIREMENTS AND USER SAFETY GENERAL CHARACTERISTICS TECHNICAL DATA DEVICE INSTALLATION UNPACKING ASSEMBLY CONNECTION METHOD MAINTENANCE DRIPTION OF IR REMOTE CONTROLLER AND CONTROL SOFTWARE PUSH-BUTTONS PRINCIPLE OF OPERATION DISPLAYING MODE SLAVE mode operation MASTER mode operation DEVICE PROGRAMMING PROGRAMMING PARAMETERS EDITION Numeric parameters (digit change mode) Numeric parameters (slide change mode) Switch parameters ( LIST type) DRIPTION bri parameter SLAv menu mast menu rs menu Scod parameter Edit parameter defs parameter SErv menu STRUCTURE THE MODBUS PROTOCOL HANDLING LIST OF REGISTERS TRANSMISSION ERRORS DRIPTION DRIVING OF DECADES Decimal point position and minimal number of digits Interpretation of registers 10h...15h content Interpretation of registers 18h... 1Dh content Examples of exploration of registers 02h and 03h Examples of exploration of registers 10h... 15h EXAMPLES OF QUERY/ANSWER FRAMES DEFAULT AND USER'S SETTINGS LIST

3 Explanation of symbols used in the manual:! - This symbol denotes especially important guidelines concerning the installation and operation of the device. Not complying with the guidelines denoted by this symbol may cause an accident, damage or equipment destruction. i IF THE DEVICE IS NOT USED ACCORDING TO THE MANUAL THE USER IS RESPONSIBLE FOR POSSIBLE DAMAGES. - This symbol denotes especially important characteristics of the unit. Read any information regarding this symbol carefully 1. BASIC REQUIREMENTS AND USER SAFETY! - The manufacturer is not responsible for any damages caused by inappropriate installation, not maintaining the proper technical condition and using the unit against its destination. - Installation should be conducted by qualified personnel. During installation all available safety requirements should be considered. The fitter is responsible for executing the installation according to this manual, local safety and EMC regulations. - GND input of device should be connected to PE wire; - The unit must be properly set-up, according to the application. Incorrect configuration can cause defective operation, which can lead to unit damage or an accident. - If in the case of a defect of unit operation there is a risk of a serious threat to the safety of people or property additional, independent systems and solutions to prevent such a threat must be used. - The unit uses dangerous voltage that can cause a lethal accident. The unit must be switched off and disconnected from the power supply prior to starting installation of troubleshooting (in the case of malfunction). - Neighbouring and mating equipment must meet the requirements of appropriate standards and regulations concerning safety and be equipped with adequate anti-overvoltage and anti-interference filters. - Do not attempt to disassemble, repair or modify the unit yourself. The unit has no user serviceable parts. Units, in which a defect was stated must be disconnected and submitted for repairs at an authorized service centre. 3

4 !! - In order to minimize fire or electric shock hazard, the unit must be protected against atmospheric precipitation and excessive humidity. - Do not use the unit in areas threatened with excessive shocks, vibrations, dust, humidity, corrosive gasses and oils. - Do not use the unit in areas where there is risk of explosions. - Do not use the unit in areas with significant temperature variations, exposure to condensation or ice. - Do not use the unit in areas exposed to direct sunlight. - Make sure that the ambient temperature (e.g. inside the control box) does not exceed the recommended values. In such cases forced cooling of the unit must be considered (e.g. by using a ventilator). The unit is designed for operation in an industrial environment and must not be used in a household environment or similar. 2. GENERAL CHARACTERISTICS The SWE-94-S is a simple digital panel indicator intended for displaying any numerical values and characters defined by user (in SLAVE mode only) sent from the master device over the RS 485 serial interface link. The displayed value may be collected from other device (in MASTER mode). The display brightness can be adjusted in 8 steps. Modbus RTU protocol is used to communication with device. Baud rate is user defined in baud range. The device can be configured via IR remote controller, or optionally by PC via RS-485 interface, or using simple RS-232 to IR converter. Over more communication interface RS-485 enables data transmission in any monitoring system equipped witch Modbus RTU protocol. Easy assembling, small dimensions, precision and reliability are the basic trumps of SWE-94-S indicators. IR remote controller is not a part of the SWE-94-S and must be ordered separately. 4

5 3. TECHNICAL DATA Power supply voltage (depending on version) External fuse (required) Power consumption Display range Communication interface Baud rate Display Data memory Protection level Housing type Housing material Housing dimensions Mounting hole Assembly depth Panel thickness Operating temperature (depending on version) Storage temperature (depending on version) Humidity Altitude 230V AC ±10%; Hz (separated) or 110V AC ± 10%, Hz (separated) or V DC (not separated) T - type, max. 2 A max. 1,5 230V AC 110V AC max. 1 24V DC numerical and alphanumerical messages possible to show on 7-segment display RS 485, 8N1 and 8N2, Modbus RTU, not separated 1200 bit/s bit/s LED, 4 digit, 20mm height, red non-volatile memory, EEPROM type IP 65 (from front - option, IP 40 - standard) IP 20 (housing and connection clips) panel NORYL UL94V-0 96 x 48 x 72 mm 91 x 45 mm 88 mm max. 6 mm 0 C to +50 C or -20 C to +50 C -10 C to +70 C or -20 C to +70 C 5 to 90% no condensation up to 2000 meters above sea level Screws tightening max. torque 0.5 Nm Max. connection leads diameter 2.5 mm 2 Safety requirements according to: PN-EN installation category: II pollution degree: 2 voltage in relation to ground: 300V AC insulation resistance: >20MΩ insulation strength between power supply and input/output terminal: 2300V EMC according to: PN-EN ! This is a class A unit. In housing or a similar area it can cause radio frequency interference. In such cases the user can be requested to use appropriate preventive measures. 5

6 4. DEVICE INSTALLATION The unit has been designed and manufactured in a way assuring a high level of user safety and resistance to interference occurring in a typical industrial environment. In order to take full advantage of these characteristics installation of the unit must be conducted correctly and according to the local regulations.! - Read the basic safety requirements on page 3 prior to starting the installation. - Ensure that the power supply network voltage corresponds to the nominal voltage stated on the unit s identification label. - The load must correspond to the requirements listed in the technical data. - All installation works must be conducted with a disconnected power supply. - Protecting the power supply clamps against unauthorized persons must be taken into consideration UNPACKING After removing the unit from the protective packaging, check for transportation damage. Any transportation damage must be immediately reported to the carrier. Also, write down the unit serial number on the housing and report the damage to the manufacturer. Attached with the unit please find: - user s manual, - warranty, - assembly brackets - 2 pieces ASSEMBLY! - The unit is designed for mounting inside housings (control panel, switchboard) insuring appropriate protection against surges and interference. Metal housings must be connected to ground in a way that complies with the governing regulations. - Disconnect the power supply prior to starting assembly. - Check the connections are wired correctly prior to switching the unit on.! In order to install the unit, a 91 x 45 mm mounting hole (Figure 4.1, Figure 4.2) must be prepared. The thickness of the material of which the panel is made must not exceed 6 mm. Place the unit in the mounting hole inserting it from the front side of the panel, and then fix it using the brackets (Figure 4.3). The minimum distances between the centre points of multiple units - due to the thermal and mechanical conditions of operation - are 115 mm x 67mm (Figure 4.4). 6

7 91 max. 6 Figure 4.1. Recommended mounting hole dimensions Figure 4.2. Allowable mounting hole dimensions ,5 max ,5 Figure 4.3. Installing of brackets, and dimensions of connectors. 7

8 Figure 4.4. Minimum distances when assembly of a number of units 8

9 4.3. CONNECTION METHOD Caution! User manual - INDICATOR SWE-94-S - Installation should be conducted by qualified personnel. During installation all available safety requirements should be considered. The fitter is responsible for executing the installation according to this manual, local safety and EMC regulations. - The unit is not equipped with an internal fuse or power supply circuit breaker. Because of this an external time-delay cut-out fuse with minimal possible nominal current value must be used (recommended bipolar, max. 2A) and a power supply circuit-breaker located near the unit; In the case of using a monopolar fuse it must be mounted on the phase cable (L). - The power supply network cable diameter must be selected in such a way that in the case of a short circuit of the cable from the side of the unit the cable shall be protected against destruction with an electrical installation fuse. - Wiring must meet appropriate standards and local regulations and laws. - In order to secure against accidental short circuit the connection cables must be terminated with appropriate insulated cable tips. - Tighten the clamping screws. The recommended tightening torque is 0.5 Nm. Loose screws can cause fire or defective operation. Over tightening can lead to damaging the connections inside the units and breaking the thread. - In the case of the unit being fitted with separable clamps they should be inserted into appropriate connectors in the unit, even if they are not used for any connections. - Unused clamps (marked as n.c.) must not be used for connecting any connecting cables (e.g. as bridges), because this can cause damage to the equipment or electric shock. - If the unit is equipped with housing, covers and sealing packing, protecting against water intrusion, pay special attention to their correct tightening or clamping. In the case of any doubt consider using additional preventive measures (covers, roofing, seals, etc.). Carelessly executed assembly can increase the risk of electric shock. - After the installation is completed do not touch the unit s connections when it is switched on, because it carries the risk of electrical shock. Due to possible significant interference in industrial installations appropriate measures assuring correct operation of the unit must be applied. To avoid the unit of improper indications keep recommendations listed below. Avoid common (parallel) leading of signal cables and transmission cables together with power supply cables and cables controlling induction loads (e.g. contactors). Such cables should cross at a right angle. Contactor coils and induction loads should be equipped with anti-interference protection systems, e.g. RC-type. 9

10 Use of screened signal cables is recommended. Signal cable screens should be connected to the earthing only at one of the ends of the screened cable. In the case of magnetically induced interference the use of twisted couples of signal cables (so-called spirals ) is recommended. The spiral (best if shielded) must be used with RS-485 serial transmission connections. In the case of measurement or control signals are longer than 30m or go outside of the building then additional safety circuits are required. In the case of interference from the power supply side the use of appropriate antiinterference filters is recommended. Bear in mind that the connection between the filter and the unit should be as short as possible and the metal housing of the filter must be connected to the earthing with largest possible surface. The cables connected to the filter output must not run in parallel with cables with interference (e.g. circuits controlling relays or contactors). Connections of power supply voltage and controlling signals are executed using the screw connections on the back of the unit s housing. max. 2 mm 6-7 mm Figure 4.5. Method of cable insulation replacing and cable terminals n.c. n.c. n.c. n.c. n.c. Power DATAsupply DATA+ GND (depending on version) RS - 485! Figure 4.6. Method of connections All connections must be made while power supply is disconnected! 10

11 a) L N 1 2 b) FUSE FUSE L N 230V AC Figure 4.7. Connection of power supply a) for 230V AC version; b) for 24V DC version V DC 4.4. MAINTENANCE The unit does not have any internal replaceable or adjustable components available to the user. Pay attention to the ambient temperature in the room where the unit is operating. Excessively high temperatures cause faster ageing of the internal components and shorten the fault-free time of unit operation. In cases where the unit gets dirty do not clean with solvents. For cleaning use soft, dry cloth. In the case of more significant contamination use warm water with small amount of detergent to wet the cloth.! Using any other agents can cause permanent damage to the housing. Product marked with this symbol should not be placed in municipal waste. Please check local regulations for disposal and electronic products. 5. DRIPTION OF IR REMOTE CONTROLLER AND CONTROL SOFTWARE PUSH-BUTTONS infra-red transmitter programming pushbuttons 11

12 Symbols and functions of push-buttons: PAUSE RESET Symbol used in the manual: [/] Functions: Enter to main menu ( press and hold by at least 2 sec.) Exit the current level and Enter to previous menu (or displaying mode) Cancel the changes made in parameter being edited Symbol used in the manual: [] Functions: Start to edit the parameter Enter to the sub-menu, Confirmation of changes made in parameter being edited Symbol used in the manual: [^] [v] Functions: Change of the present menu, Modification of the parameter value, Change of the display mode. Inactive. 6. PRINCIPLE OF OPERATION After turning the power supply on, device ID and software version are showed on the display, next the digital indicator goes to the display mode DISPLAYING MODE Directly after enter to displaying mode, device displays info as long as first actualization of displayed value via RS-485 interface comes. Depend on value of mode parameter of rs menu, device can works as MASTER or SLAVE. In SLAVE mode displayed value, and it's parameters are determined by values written to internal registers by other MASTER. In MASTER mode device reads values to displaying, and it's decimal point position from selected SLAVE device. If content of displayed value register exceeds permissible displaying range following message is showed: ovh - if content displayed value register exceeds upper border of of permissible displaying range ovl - if content displayed value register is smaller than lower border of permissible displaying range Permissible displaying range equals: , All accessible parameters can be changed by entering the menu (see: DEVICE PROGRAMMING). Use the local keyboard or the remote controller to do it. (Note: all parameters can be remote changed via RS-485 interface). 12 i Configuration of the device (via menu or RS 485 interface) do not stops device.

13 SLAVE mode operation In SLAVE mode device displays info as long as first write to displayed value registers by MASTER device comes over RS-485 interface. If new value will not be written in this register in time defined by mbto parameter since last writing, currently displayed value starts blinking. It stops blinking after next proper write. SLAVE mode allows display user defined signs on selected positions (see: DRIVING OF DECADES, page 22). Parameters connected with SLAVE mode are accessible in menu SLAv, which is displayed only if SLAVE mode is selected (see mode parameter in rs menu) MASTER mode operation In MASTER mode device displays info as long as first read of selected registers of SLAVE device occurs. If SLAVE device do not responds during time defined by mbto parameter, since MASTER sent last frame, currently displayed value starts to blinking. Blinking stops after next proper read of selected register of SLAVE device. Registers of SLAVE device are read every time defined by parameter PEr. Parameters connected with MASTER are accessible in menu mast, which is displayed only if MASTER mode is selected (see mode parameter in rs menu). 7. DEVICE PROGRAMMING The device menu allow user to set all parameters connected to operation of the display, control modes, communication via RS-485 and access settings. The meaning of the particular parameters is described in paragraph DRIPTION PROGRAMMING To enter main menu (being in the displaying mode) operator must to press and hold at least 2 sec. [/] button. If the user password is defined (see parameter Scod ), operator have to enter correct one before proceeding to menu options. Entering of the passwords is similar to the edition of numeric parameters (see: PARAMETERS EDITION ), however presently editing digit is showed only on the display, other digits are replaced by - sign. After entering of last digit of the password first menu position will be displayed (if the password is correct) or warning Err in other case. Functions of the buttons while sub-menu and parameters choice: Selection of sub-menu or parameter for editing. Name of selected item (submenu or parameter) is displayed. Operation of [] button depend on present menu position: if the name of some sub-menu is displayed - enter this sub-menu; name of the first parameter (or next level sub-menu) is displayed, if the name of some parameter is displayed - enter the edition of this parameter; present value of the parameter is displayed, [/] button allow user to exit present menu level and goes to upper level menu (or displaying mode). 13

14 i After about 1 min. since last use of the buttons, device exits the menu mode and returns to the displaying mode (only if no parameters are in editing mode) PARAMETERS EDITION To start edition of any parameter user should select name of desired one using [^] [v] buttons and then press [] Numeric parameters (digit change mode) Numerical parameters are displayed as decimal numbers. The mode of its new value entering depends on chosen edit method ( see parameter Edit ). In mode by digit ( Edit = dig ) pressing one of the keys [^] or [v] causes change of current position (flashing digit) or the sign (+/-). Short pressing of the [] button causes change of the position (digit). Press [] at least 2 seconds to accept the changes, after that question SEt? is displayed, and user must to confirm (or cancel) the changes. To conform changes (and story it in EEPROM) press [] button shortly after SEt? is displayed. To cancel the changes press [] button shortly after SEt? is displayed. After that device returns to the menu Numeric parameters (slide change mode) In slide change mode ( Edit = Slid ), buttons [^] and [v] has different functions. To increase edited value press (or press and hold) [^] button only, the increasing became quickest as long as button [^] is pressed. To slow down the increasing, button [v] can be used. If [v] is pressed shortly (and button [^] is still pressed), increasing slow down for a moment only, if [v] is pressed and held while button [^] is still pressed the increasing slow down and will be kept on lower speed. To decrease edited value press (or press and hold ) [v] button only. The decreasing became quickest as long as button [v] is pressed. To slow down the decreasing, button [^] can be used. If [^] is pressed shortly (and button [v] is still pressed), decreasing slow down for a moment only, if [^] is pressed and held while button [v] is still pressed the decreasing slow down and will be kept on lower speed. Press [] at least 2 seconds to accept the changes, after that question SEt? is displayed, and user must to confirm (or cancel) the changes. To conform changes (and story it in EEPROM) press [] button shortly after SEt? is displayed. To cancel the changes press [] button shortly after SEt? is displayed. After that device returns to the menu Switch parameters ( LIST type) Switch parameters can be described as a sets of values (a lists) out of which only one of the options available on the list can be selected for the given parameter. Options of switching parameter are selected using [^], [v] keys. Short pressing of [] causes in displaying of the acknowledge question ( SEt? ). If key [] is pressed again, the changes are accepted, stored in EEPROM end the edition process finished. Pressing the key [] after SEt? causes in cancelling of made changes and returning to menu. 14

15 Functions of buttons when editing numeric and switching parameters: While editing numeric parameter: change of current (flashing) digit slide change of value (acceleration, deceleration, direction change) While editing switch parameter - selection of switch parameter. If numerical parameter is being edited, a short press of [] button change edited position. A long press of [] button (at lest 2 sec.) causes of display a SEt? ask, which allow user to make sure if change of the parameter value is correct. If switch parameter is being edited, a short press of [] button causes of display a SEt? ask. When [] button is pressed again (while SEt? is displayed) the new value of the parameter is stored in EEPROM memory. Pressing this button operator can cancel the changes done up to now (if they were not approved by [] button after the SEt? ask) and come back to menu 7.3. DRIPTION password checking. If some password different from 0000 is set, then every enter to main menu follows the entering of password. If entered password is correct then first menu position will be displayed else warning Err, and unit returns to displaying mode. i Due to problem with direct displaying of m letter, it is exchanged with special sign. Independently in user manual letter m is used to make it more readable (example: mode ) bri parameter This parameter allows user to set bright of the LED display, bright can be set to conventional values from bri1 to bri SLAv menu This menu is accessible only if SLAVE mode is selected, and it contains parameters connected with this mode: Addr i - this parameter defines the address of the device, accordingly to Modbus protocol. It can be set in range from 0 to 199. If the value 0 is set then device, responds to frames with address 255 (FFh). In SLAVE mode every SWE-94-S connected to the same serial network should have its own address, different from other devices addressed. 15

16 type - type of value written to displayed value registers, it can be set to: U-16 S-16 U-32 S-32 - unsigned 16 bit (write to register 01h is not necessary); - signed 16 bit (write to register 01h is not necessary); - unsigned 32 bit (writes to registers 01h and 02h are necessary); - signed 32 bit (writes to registers 01h and 02h are necessary); mbac - this parameter sets the access to the configuration registers of the device. Possible values: on - configuration registers can be set via RS-485 interface, off - configuration registers can not be set via RS-485 interface. i Blockade of writing do not refers with registers no. 01h, 02h i 03h (see: LIST OF REGISTERS). valr i - this parameter defines reaction for writes to registers 01h, 02h and 03h, it can be set to: on - after writes device responds with standard frame off - after writes device do not sends anything. If parameter valr is set to off, then it is possible to drive many devices simultaneously (at the same moments), without collisions in network mast menu This menu is accessible only if MASTER mode is selected, and it contains parameters connected with this mode: Addr reg type - this parameter defines the address of the device which have to be read. It can be set in range from 0 to 199. If the value 0 is set then device with address 255 (FFh) will be read. - this parameter defines holding register number (of SLAVE device), which contains displayed value. If displayed value type is set as 32 bits (signed or unsigned see parameter type, parameter reg defines higher word register address. Its value can be changed from 0 to type of value written to displayed value registers, it can be set to: U-16 S-16 U-32 S-32 - unsigned 16 bit (single register); - signed 16 bit (single register); - unsigned 32 bit (two following registers); - signed 32 bit (two following registers); 16

17 Pnt PrEG PEr - decimal point position, following values are possible for this parameter 0, 0.0, 0.00,..., reg. If value reg is selected, then decimal point position will be read from holding register defined by parameter PrEG of SLAVE device defined by parameter Addr - this parameter defines holding register number (of SLAVE device) which contains decimal point position. Value of this parameter matters only if parameter Pnt is set to value reg. In other case value of PrEG does not matter. - this parameter defines time period between successive reads of displayed value and decimal point position (if Pnt = reg ) registers rs menu This menu is connected with RS-485 interface, and sets his properties: mode - this parameter defines device operation mode. There are available two modes: mast - MASTER mode operation. SWE-94-S unit reads necessary data from defined registers of SLAVE device. All parameters referred with this operation mode are available in mast submenu; SLAv - SLAVE mode operation, SWE-94-S unit waits for data from MASTER device. All parameters referred with this operation mode are available in SLAv submenu; baud - this parameter determines RS-485 interface baud rate. It can be set to one of 8 possible values: 1.2, 2.4, 4.8, 9.6, 19.2, 38.4, 57.6, 115.2, which respond to the baud rates of 1200, 2400, 4800, 9600, 19200, 38400, and bit/s respectively. mbto i resp - this parameter defines maximal time (sec) between following frames received by the device. If the delay will be greater than the value of mbto parameter, displayed value starts blinking. Parameter mbto can be set to values from 0 to 99 seconds. The value 0 means that the time will be not controlled. In MASTER mode, time period defined by parameter mbto is prolonged of value defined by parameter PEr. - this parameter defines minimal (additional) delay between the Modbus message and the answer of the device (received and sent via RS-485 interface). This additional delay allows the device to work with poor RS-converters which do not works properly on baud rates higher than This parameter can be set to one of values: 17

18 Std 10c 20c 50c 100c 200c - answer as quick as possible, no additional delay - answer delayed of 10, 20, 50, 100 of 200 chars respectively, where one character time depends on selected baud rate i In the most cases parameter resp should be set to Std (no additional delay). Unfortunately for some third party RS-converters resp should be adjusted experimentally. Table 7.1 contains most frequently used values. baud parameter resp parameter 10c 20c 50c Tab.7.1. Settings of resp parameter Scod parameter This parameter defines user password (4-digits number). If this parameter is set at value 0000, user password is turned off. i If the user do not remember his password, the access to the menu is possible by the one-use password. To get this password please contact with Marketing Division. Single use password can be used only one time, after that it is destroyed. Entering this password causes in clearing of user password, it means sets the user password to The one-use password can be used ONE TIME ONLY, it is impossible to use it again! The one-use password can be restored by Service Division only Edit parameter This parameter allows to change the edition mode of numerical parameters: dig - the change to by digit mode, Slid - slide change mode defs parameter This setting allows to restore the factory settings of the device. To get the access to this option special password is required: 5465, next the device displays acknowledge question SEt?. Press [] to acknowledge the restoring of factory settings or [] to cancel SErv menu This menu contains the parameters for authorized service only. To enter this menu proper service password must be entered. Improper settings can causes of damage of the device. 18

19 7.4. STRUCTURE Displaying mode Press and hold at least 2 seconds 0 _ 4-digit user password entering (if it is different from 0000 ) bri Parameter edition SLAv or mast only one submenu is active: SLAv or mast depending on mode parameter Addr Parameter edition Addr type mbac Parameter edition reg type valr Pnt PrEG PEr rs mode Parameter edition baud Scod Parameter edition mbto resp Edit Parameter edition defs 4-digit special password entering 0 _ SEt? Default settings restoring SErv 19

20 8. THE MODBUS PROTOCOL HANDLING Transmission parameters: 1 start bit, 8 data bits, 1 or 2 stop bit (2 bits are send, 1 and 2 bits are accepted when receive), no parity control Baud rate: selectable from: 1200 to bits/second Transmission protocol: MODBUS RTU compatible The device parameters and display value are available via RS-485 interface, as HOLDINGtype registers (numeric values are given in U2 code) of Modbus RTU protocol. The registers (or groups of the registers) can be read by 03h function, and wrote by 06h (single registers) or 10h (group of the registers) accordingly to Modbus RTU specification. Maximum group size for 03h and 10h functions can not exceeds 16 registers (for single frame). i The device interprets the broadcast messages, but then do not sends the answers LIST OF REGISTERS Register Write Range Register description 01h 02h Yes Yes see descr. 03h Yes see descr. 04h Yes see descr. Displayed value higher word. Warning! To change displayed value it is required to write data in following manner: first higher word and next lower word of data. Writing of higher word only do not causes changes in displayed data. Displayed value - lower word. Total value of registers 01h and 02h: from -999 to 9999; data type depends on parameter type of SLAv submenu. Higher byte displaying mode of registers 01h i 02h content: 00h display value of registers 01h i 02h as a digits, with control of range. If allowable range ( from -999 to 9999) is exceeded then proper warning is displayed ( ovh or ovl ); 80h display -Hi- rather than value of registers 01h i 02h; 40h display -Lo- rather than value of registers 01h i 02h; Lower byte: bit 7 - reserved bits minimal number of displayed digits. 0 - one digit; 1 - two digits; etc. (see Tab. 8.1). If content of registers 01h and 02h is shorter than minimal number of digits, then additional 0's are displayed. bit 3 - display decimal point on most right position regardless of bits 2..0 value bits 2..0 decimal point position: 0 no decimal point; ; ; etc. Lower byte shift of displayed value to the left of the display - bits 3..0 defines shift size (0 no shift; 1 one position; etc.) 20

21 Register Write Range Register description 10h Yes see descr. Lower byte: Sign defined for decade no. 1 (most right) (see Tab. 8.2); in ASCII mode its value select sign of ASCII table; in bit mode: bit 0 - segment A,... bit 6 - segment G, bit 7 DP, Higher byte: bit 7 enable displaying of defined sign in place of digit of decade 1; bit 6 ASCII coding enable other bits - reserved 11h Yes see descr. Like above, but refers to decade 2 12h Yes see descr. Like above, but refers to decade 3 13h Yes see descr. Like above, but refers to decade 4 18h Yes see descr. Attributes of decade 1 (most right, see Tab. 8.3); bit 12 - blinking enable (about 1Hz) other bits - reserved 19h Yes see descr. Like above, but refers to decade 2 1Ah Yes see descr. Like above, but refers to decade 3 1Bh Yes see descr. Like above, but refers to decade 4 20h 1 Yes 01h FFh Device address in SLAVE mode. 21h No 22EBh Device identification code 22h 2 Yes h 3 Yes h Yes h Yes h Yes Dh 4 Yes 1 8 2Fh Yes h Yes 0 3 baud parameter in rs menu (baud rate); baud; baud; baud; baud; baud; baud; baud; baud mbac parameter in SLAv menu (permission to write registers via RS-485 interface); 0 - write denied ; 1 - write allowed resp parameter in rs menu (additional response delay); 0 - no additional delay; 1-10c option; 2-20c option; 3-50c option; 4-100c option; 5-200c option; valr parameter in SLAv menu ( blockade of modbus answer, after writes to registers 01h, 02h or 03h); 0 answer blocked; 1 standard modbus answer mbto parameter in rs menu (maximum delay between received frames); 0 - no delay checking; maximum delay expressed in seconds bri parameter (display brightness); 1 - the lowest brightness; 8 - the highest brightness Edit parameter (numerical parameters edit mode); 0 - dig mode; 1 - SLid mode type parameter in SLAv menu (displayed value type): 0 - unsigned 16 bit (write to register 01h is not necessary); 1 - signed 16 bit (write to register 01h is not necessary); 2 - unsigned 32 bit (writes to registers 01h and 02h are necessary); 3 - signed 32 bit (writes to registers 01h and 02h are necessary); 31h 4 Yes 1 8 Dynamically driving of display brightness via serial interface 21

22 1 - after writing to register no 20h the device responds witch an old address in the message. 2 - after writing to register no 22h the device responds with the new baud rate. 3 - the value of the mbac parameter is also connected to write to this register, so it is possible to block a writes, but impossible to unblock writes via RS-485 interface, The unblocking of the writes is possible from menu level only. 4 - if often changing of display brightness is required, writing to register 31h is recommended. Contents of this register is not stored while power off, and after power on parameter set via is used for display brightness (register 2Dh) 8.2. TRANSMISSION ERRORS DRIPTION If an error occurs while write or read of single register, then the device sends an error code according to Modbus RTU specifications. Error codes: 01h - illegal function (only functions 03h, 06h and 10h are available), 02h - illegal register address 03h - illegal data value 08h - no write permission ( see: mbac parameter) 8.3. DRIVING OF DECADES i Driving of decades described below is possible in SLAVE mode only Number of available decades depends on device type decade no. 6 decade no. 5 decade no. 4 decade no.3 decade no. 2 decade no.1 Figure 8.1. Decades positions for 6 decade version 22

23 Decimal point position and minimal number of digits Bits 6..0 of register. 03h (example value) Displayed message if displayed value equals 1 Displayed message if displayed value equals xxx xxx xxx x - does not matter Tab Decimal point position and minimal number of digits Interpretation of registers 10h...15h content Con - if this bit is set (1) then, sign defined by bits 7..0 is displayed in place of particular digit (defined as a part of registers 01h and 02h value), Asc X - if this bit is set then sign to be placed on particular decade (defined by bits 7..0) is interpreted as ASCII code, - these bits does not matter DP, G...A - these bits defines if particular segments light or not (only if bit Asc=0) or ASCII code of particular decade (only if bit Asc=1) Con Asc X DP G F E D C B A Tab Interpretation of registers 10h...15h content 23

24 Interpretation of registers 18h... 1Dh content X BL - these bits does not matter - if this bit is set then particular decade blinks about one time per second X BL X Tab Interpretation of registers 18h... 1Dh content Examples of exploration of registers 02h and 03h To display 16 bit signet numbers, with 2 digits after decimal point. Parameter type of menu SLAv should be set to S-16 ( 16 bit signed values). To set decimal point position, the value of register 03h must to be written with value 2 (see Tab. 8.1). Decimal point position can be done once, and it is valid for all further values of reg. 01h and 02h. To set displayed value, its value must to be written to register 01h and 02h, e.g. by writing of 0010h (+16 decimal) to register 02h (reg. 01H =0000h) causes by displaying: by writing values higher than permissible displaying range causes by displaying: by writing values lower than permissible displaying range causes by displaying: i Displaying of negative numbers is possible only if proper displaying value data type is selected ( S-32 or S-16 ). Negative values should be written in U2 code. 24

25 Examples of exploration of registers 10h... 15h To display message like showed hereafter, with assumption that number value (6.5) may be changed (e.g. depend on measurement value): User should set: 1. register 02h to value 0021h (65 decimal) 2. register 03h (decimal point position) to value 0001h (see Tab. 8.1), 3. register 10h (sign in place of decade 1) to value C043h (ASCII code of C sign in lower byte and bits Con i Asc in higher byte, see Tab. 8.2), 4. register 11h (sign in place of decade 2) to value 8063h (byte code of sign in lower byte, and bit Con in higher byte no ASCII coding - see Tab. 8.2), 5. register 04h (left shift of displayed value) to value 02h (shift of 2 positions to the left). Writes presented above can be done at once, and it is valid for all further values of reg. 01h and 02h. To change displayed number (6.5) it is change of register 02h only is necessary (if data type is set to 16 bits ), e.g. By writing of value 12 to reg. 02h causes by displaying message: i User must to remember, that signs defined by registers 10h...13h will be displayed in place of particular digits of displayed values, e.g. If in example above user writes value C041h (sign A in ASCII code) to register 12h, then device shows message: 8.4. EXAMPLES OF QUERY/ANSWER FRAMES Examples apply for device with address 1. All values are represent hexadecimal. Field description: ADDR Device address on modbus network FUNC Function code REG H,L Starting address (address of first register to read/write, Hi and Lo byte) COUNT H,L No. of registers to read/write (Hi and Lo byte) BYTE C Data byte count in answer frame DATA H,L Data byte (Hi and Lo byte) CRC L,H CRC error check (Hi and Lo byte) 25

26 1. Read of device ID code ADDR FUNC REG H,L COUNT H,L CRC L,H D4 00 The answer: ADDR FUNC BYTE C DATA H,L CRC L,H EB E0 AB DATA - identification code (22EBh) 2. Change of the device address from 1 to 2 (write to reg. 20h) ADDR FUNC REG H,L DATA H,L CRC L,H C1 DATA H - 0 DATA L - new device address (2) The answer (the same as the message): ADDR FUNC REG H,L DATA H,L CRC L,H C1 3. Writing of value to be displayed, and decimal point position (multi register write using modbus function 10h) ADDR FUNC REG H,L COUNT H,L BYTE C And next bytes of frame: DATA H1,L1 DATA H2,L2 DATA H3,L3 CRC L,H D D This write causes by displaying message: Device's answer: ADDR FUNC REG H,L COUNT H,L CRC L,H D1 C8 26

27 4. Try to write improper value to register 22h (baud rate). ADDR FUNC REG H,L DATA H,L CRC L,H E9 C6 DATA L - DATA L value exceeds allowable range (from 0 to 7) The answer (if an error occur): ADDR FUNC ERR CRC L,H i There is no full implementation of the Modbus Protocol in the device. The functions presented above are available only. 27

28 9. DEFAULT AND USER'S SETTINGS LIST Parameter Description Default value User's value bri Display brightness bri6 15 Configuration of SLAVE mode (menu SLAv ) Addr SWE-94-S device address 0 15 type Display value type S mbac Permission to changes of configuration registers on 16 valr Blockade of answer after writes to reg. 01H, 02h or 03h Configuration of MASTER mode ( mast menu) Addr SLAVE device address 0 16 reg Number of displayed value register 1 16 type Displayed value data type S Pnt Decimal point position 0 17 PrEG Decimal point register number (of SLAVE device) 5 17 PEr Time period of data reading from SLAVE device 0 17 on RS 485 interface configuration ( rs menu) mode Operation mode SLAv 17 baud Baud rate mbto Maximum delay between received messages 0 17 resp Additional delay of answer transmission Std 17 Configuration of numerical parameters edition Edit Numerical parameters edit mode dig 18 Desc. page 16 28

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30 30 User manual - INDICATOR SWE-94-S

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32 SIMEX Sp. z o.o. ul. Wielopole Gdańsk Poland tel.: (+48 58) fax: (+48 58) info@simex.pl